import time
scale = 10
print("----执行开始----")
for i in range(scale+1):
    a = '**' * 1
    b = '..'* (scale - i)
    c = (i/scale) *100
    print("%{:'3.0f } [{}->{}]".format(c,a,b))
    time.sleep(0,1)
print("----执行开始----")
